Some opportunities for vibration analysis with time averaging in digital Fresnel holography

被引：72

作者：

Picart, P

Leval, J

Mounier, D

Gougeon, S

机构：

[1] Ecole Natl Super Ingn Mans, F-72085 Le Mans 9, France

[2] Univ Maine, Acoust Lab, UMR 6613, CNRS, F-72085 Le Mans 9, France

来源：

APPLIED OPTICS | 2005年 / 44卷 / 03期

关键词：

D O I：

10.1364/AO.44.000337

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Features offered by the combination of time averaging and digital Fresnel holography are investigated. In particular, we introduce the concept of the zero-crossing phase of Bessel fringes. which allows a highly contrasted determination of the dark fringes in the hologram. We discuss some particularities: of the digital reconstruction and show how time-averaged digital holography can be used to study vibration drifts. Experiment results are presented in the case of a loudspeaker under a Sinusoidal excitation; digital and analogical holography are also compared. (C) 2005 Optical Society of America.

引用

收藏

页码：337 / 343

页数：7

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